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Hello @Marmi8, I hope you're having a great day, it's always nice to greet new members in the Fitbit Community! 
I'm not sure if I quite understand your question, are you asking how to get notifications from the Fitbit app when someone texts you from there? If so, please note that this is currently not possible but I think it's a great idea which is why I would like to suggest you to post your insight as a suggested idea where our members can comment and vote for it so it can be implemented in the future. This is the best way to make your voice heard and get the attention from our development team.
I hope this can be helpful, however if you're referring to another type of messages or notifications, please reply to me with as many details as you can so I can assist you further. Additionally, if there's anything else I can do for you, please feel free to reply.
Best Answer